Sprinkle a few __used markers to prevent gcc4 from throwing away essential

bits of code and data.  With this change gcc4 builds usable crt*.o on sparc64,
other architectures probably need some more love.

ok marco@, jsg@

5 files changed, 21 insertions, 21 deletions

diff --git a/lib/csu/common_elf/crtbegin.c b/lib/csu/common_elf/crtbegin.c
index 64bf618e77c..95878e7db7f 100644
--- a/lib/csu/common_elf/crtbegin.c
+++ b/lib/csu/common_elf/crtbegin.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: crtbegin.c,v 1.13 2009/04/13 20:15:24 kurt Exp $	*/
+/*	$OpenBSD: crtbegin.c,v 1.14 2010/05/01 11:32:43 kettenis Exp $	*/
 /*	$NetBSD: crtbegin.c,v 1.1 1996/09/12 16:59:03 cgd Exp $	*/
 
 /*
@@ -89,8 +89,8 @@ static const init_f __CTOR_LIST__[1]
 static const init_f __DTOR_LIST__[1]
     __attribute__((section(".dtors"))) = { (void *)-1 };	/* XXX */
 
-static void	__dtors(void);
-static void	__ctors(void);
+static void	__dtors(void) __used;
+static void	__ctors(void) __used;
 
 static void
 __dtors()
@@ -119,8 +119,8 @@ __ctors()
 
 void __init(void);
 void __fini(void);
-static void __do_init(void);
-static void __do_fini(void);
+static void __do_init(void) __used;
+static void __do_fini(void) __used;
 
 MD_SECTION_PROLOGUE(".init", __init);
 
diff --git a/lib/csu/common_elf/crtbeginS.c b/lib/csu/common_elf/crtbeginS.c
index 80779c626c1..c4572e7591d 100644
--- a/lib/csu/common_elf/crtbeginS.c
+++ b/lib/csu/common_elf/crtbeginS.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: crtbeginS.c,v 1.10 2009/04/13 20:15:24 kurt Exp $	*/
+/*	$OpenBSD: crtbeginS.c,v 1.11 2010/05/01 11:32:43 kettenis Exp $	*/
 /*	$NetBSD: crtbegin.c,v 1.1 1996/09/12 16:59:03 cgd Exp $	*/
 
 /*
@@ -78,8 +78,8 @@ static init_f __CTOR_LIST__[1]
 static init_f __DTOR_LIST__[1]
     __attribute__((section(".dtors"))) = { (void *)-1 };	/* XXX */
 
-static void	__dtors(void);
-static void	__ctors(void);
+static void	__dtors(void) __used;
+static void	__ctors(void) __used;
 
 void
 __dtors(void)
@@ -109,8 +109,8 @@ __ctors(void)
 }
 void _init(void);
 void _fini(void);
-static void _do_init(void);
-static void _do_fini(void);
+static void _do_init(void) __used;
+static void _do_fini(void) __used;
 
 MD_SECTION_PROLOGUE(".init", _init);
 
diff --git a/lib/csu/common_elf/crtend.c b/lib/csu/common_elf/crtend.c
index f26b95580ba..6f61be9afa8 100644
--- a/lib/csu/common_elf/crtend.c
+++ b/lib/csu/common_elf/crtend.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: crtend.c,v 1.8 2009/07/14 16:37:31 jsg Exp $	*/
+/*	$OpenBSD: crtend.c,v 1.9 2010/05/01 11:32:43 kettenis Exp $	*/
 /*	$NetBSD: crtend.c,v 1.1 1996/09/12 16:59:04 cgd Exp $	*/
 
 #include <sys/cdefs.h>
@@ -6,16 +6,16 @@
 #include "extern.h"
 
 static init_f __CTOR_LIST__[1]
-    __attribute__((section(".ctors"))) = { (void *)0 };		/* XXX */
+    __used __attribute__((section(".ctors"))) = { (void *)0 };	/* XXX */
 static init_f __DTOR_LIST__[1]
-    __attribute__((section(".dtors"))) = { (void *)0 };		/* XXX */
+    __used __attribute__((section(".dtors"))) = { (void *)0 };	/* XXX */
 
 static const int __EH_FRAME_END__[]
-__attribute__((unused, section(".eh_frame"), aligned(4))) = { 0 };
+    __used __attribute__((section(".eh_frame"), aligned(4))) = { 0 };
 
 #if (__GNUC__ > 2)
 static void * __JCR_END__[]
-__attribute__((unused, section(".jcr"), aligned(sizeof(void*)))) = { 0 };
+    __used __attribute__((section(".jcr"), aligned(sizeof(void*)))) = { 0 };
 #endif
 
 MD_SECTION_EPILOGUE(".init");
diff --git a/lib/csu/common_elf/crtendS.c b/lib/csu/common_elf/crtendS.c
index 92493006494..cb41b9fcb49 100644
--- a/lib/csu/common_elf/crtendS.c
+++ b/lib/csu/common_elf/crtendS.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: crtendS.c,v 1.6 2009/04/13 20:15:24 kurt Exp $	*/
+/*	$OpenBSD: crtendS.c,v 1.7 2010/05/01 11:32:43 kettenis Exp $	*/
 /*	$NetBSD: crtend.c,v 1.1 1997/04/16 19:38:24 thorpej Exp $	*/
 
 #include <sys/cdefs.h>
@@ -6,13 +6,13 @@
 #include "extern.h"
 
 static init_f __CTOR_LIST__[1]
-    __attribute__((section(".ctors"))) = { (void *)0 };		/* XXX */
+    __used __attribute__((section(".ctors"))) = { (void *)0 };	/* XXX */
 static init_f __DTOR_LIST__[1]
-    __attribute__((section(".dtors"))) = { (void *)0 };		/* XXX */
+    __used __attribute__((section(".dtors"))) = { (void *)0 };	/* XXX */
 
 #if (__GNUC__ > 2)
 static void * __JCR_END__[]
-__attribute__((unused, section(".jcr"), aligned(sizeof(void*)))) = { 0 };
+    __used __attribute__((section(".jcr"), aligned(sizeof(void*)))) = { 0 };
 #endif
 
 MD_SECTION_EPILOGUE(".init");
diff --git a/lib/csu/sparc64/crt0.c b/lib/csu/sparc64/crt0.c
index ee667dc8835..1bdcf09367b 100644
--- a/lib/csu/sparc64/crt0.c
+++ b/lib/csu/sparc64/crt0.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: crt0.c,v 1.7 2008/06/25 02:45:23 kurt Exp $	*/
+/*	$OpenBSD: crt0.c,v 1.8 2010/05/01 11:32:43 kettenis Exp $	*/
 
 /*
  * Copyright (c) 1995 Christopher G. Demetriou
@@ -58,7 +58,7 @@ __asm__(".text\n"
 "	ba,pt	%icc, ___start\n"
 "	nop");
 
-static void ___start(char **, void (*)(void), const void *);
+static void ___start(char **, void (*)(void), const void *) __used;
 
 static void
 ___start(char **sp, void (*cleanup)(void), const void *obj)